In the comics, Donatello is originally presented along with Leonardo as one of the two calmer Turtles. While the comics' portrayal of the team has no official command structure, in the early stories he is depicted as second-in-command. In the first issue, he is the one that killed the Shredder by knocking him and his grenade off the roof. The second issue elaborated more on each of the Turtles' personalities and opened with Donatello soldering a circuit. Later in the issue, Donatello states that he is "familiar with some computer systems" and helps April O'Neil deactivate the Mousers.